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Office LTSC 2021 reaching end of support on October 13, 2026

Office LTSC 2021 will reach end of support on October 13, 2026. After this date, Microsoft will no longer provide technical support, bug fixes, or security updates for this product. This may increase your organization's exposure to security risks and could impact compliance requirements.

To remain in a supported environment, begin upgrading to Microsoft 365 Apps now. For organizations that are not yet ready to move to the cloud, the recommended upgrade path is to the most recent supported on premises version for commercial customers, Office LTSC 2024.

Resources to help you plan your upgrade: